State selective single-electron capture in O⁶⁺+ Na collisions

Abstract

Single-electron capture in O6+ + Na collisions at 1–9 keV/amu collision energy has been studied both experimentally and theoretically. Partial cross sections for electron capture into n = 5, 6, 7, 8 and n ⩾ 9 have been obtained from target recoil momenta measured by the technique of MOTRIMS and are compared with close-coupling results obtained from a two-centre extension of the basis generator method. An overall good agreement is found, concerning the relative magnitude as well as the energy dependence. Also the contribution of ionization could be extracted from the recoil spectra. The ionization cross section is very small but strongly increases with energy.

State-selective electron transfer and ionization in collisions of highly charged ions with ground-state Na(3s) and laser-excited Na*(3p)

“…In a previous work experimental state-selective electron transfer and ionization cross sections in collisions of O 6+ with ground state Na(3s) have been compared with with theoretical results obtained with the close-coupling twocenter basis generator method (TC-BGM) [11]. Generally good agreement has been found between the experimental and theoretical results with respect to electron transfer.…”

Charge exchange and chemical reactions with trappedTh3+

“…State dependent effects on electron capture in collisions between neutral atoms and multiply charged ions have been studied extensively (see, e.g., [31][32][33][34]). The effect of Th 3+ optical excitation on its reaction rate with argon can be seen clearly in Fig.…”

β-decay and the electric dipole moment: searches for time-reversal violation in radioactive nuclei and atoms

“…The second large chamber contains a position sensitive β detector and a reaction microscope. The latter is a device to observe ionized recoils from β decay and measure their momentum with a 4π efficiency, and has been developed for atomic physics experiments [23]. It can be used in the energy range suitable for our work (E recoil ≈ 100 eV).…”